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FBI: Investment scams, Blackhole exploit kit lead cybercrime wave

Internet Crime Complaint Center spots new online property rental, CPA schemes

By Layer 8 on Mon, 04/23/12 - 5:36pm.

The FBI's Internet Crime Complaint Center's (IC3) warns of a rise in what it calls "new twists to previously-existing cyber scams."  The warnings center on investment and advertising scams as well as a release of exploit software as the latest trends in trying to separate you from your money or personal information.

Investment scam: The IC3 continues to receive complaints involving subjects who have obtained the names and social security numbers of individuals for illegal purposes. Subjects use the information to defraud the US government by electronically submitting a fraudulent tax return to Internal Revenue Service for a hefty refund. The prevalence of such complaints mirrors the recent surge in tax fraud cases involving identity theft.

More: FTC: Identity theft still top consumer blight

The IRS also reported complaints of fraudsters incorporating the use of bogus IRS documents to perpetrate this scheme. "One example of how subjects are using bogus IRS documents to commit investment fraud and steal victims' identities is by the subjects posing as a tax consulting firm. The subjects engage potential victims via telephone and attempt to convince them to sell their underperforming shares in a company. The potential victim is advised to sell their corporate shares, applicable taxes must be paid. Some of the victims were also advised they had to buy other certain shares with their profit. Documents such as share certificates and invoices for federal and state taxes were exchanged via e-mail. After the funds were wired, the subjects became unresponsive to the victim's inquiries. An open source search also revealed multiple complaints concerning this scheme. It is unknown at this time how the subjects obtained knowledge that the victims actually owned underperforming stocks."

Blackhole exploit kit updated:  According to the IC3, Blackhole is currently the most widely purchased exploit pack in the underground market. An exploit pack is a software toolkit that is injected into malicious and/or compromised websites, allowing the attacker to push a variety of exploits targeting vulnerabilities of popular applications like Java and Flash.

More: From Anonymous to Hackerazzi: The year in security mischief-making

On March 25, 2012, the Blackhole Exploit Kit 1.2.3 was released, IC3 stated. This kit included the latest critical vulnerability in Java, allowing the bypassing of Java's sandbox environment. Java's sandbox is designed to provide security for downloading and running Java applications, while preventing them access to the hard drive or network. New malware samples appearing in the wild have been highly successful at exploiting this flaw and it is estimated at least 60% of Java users have not yet patched against it.

CPA malware: The IC3 reported an increase in unsolicited e-mails titled "[BULK] Termination of your CPA license." One example of the many e-mail addresses used was support@aicpa.org. The IC3 has also received complaints reporting this spam campaign. The e-mails were purportedly from The American Institute of Certified Public Accountants concerning a complaint filed against the recipient for filing fraudulent tax refunds for their clients. A link was provided for the recipient to view the complaint. Recipients were advised to provide feedback within a specific period of time and threatened with possible termination of their accountant licenses if they failed to do so, the IC3 stated. 

Analysis conducted by  IC3 found the e-mails were pushing out a Blackhole exploit kit containing a Trojan redirector. It was also determined that the IP addresses used in this campaign have been involved in large volumes of DDoS activity from the same botnet and appear to have originated from Brazil.